Sh 14
Type	Radial engine
Manufacturer	Siemens-Halske
First run	1928
Major applications	Focke-Wulf Fw 44

The Siemens-Halske Sh 14 was a seven-cylinder air-cooled radial engine for aircraft produced in Germany in the 1920s and 1930s. First run in 1928, it was rated at 93 kW (125 hp).

Applications

• Albatros L 82
• Ambrosini SAI.3
• Ambrosini SAI.10
• BFW M.23
• BFW M.29
• BFW M.35
• Blohm & Voss Ha 135
• Bücker Bü 133C Jungmeister
• Command-Aire 3C3-BT
• Doblhoff WNF 342
• Flettner Fl 185
• Flettner Fl 265
• Flettner Fl 282
• Focke-Wulf C.20
• Focke-Wulf C.30 Heuschrecke
• Focke-Wulf Fw 44
• Focke-Wulf Fw 61
• Heinkel He 72
• LWD Szpak
• LWD Zuch
• Nuri Demirağ Nu D.38
• Prudden XM-1
• Prudden TM-1
• RWD-17W
• Rogozarski SIM-VIII
• Rogozarski SIM-XI
• SIM-II
• VL Viima

Specifications (Bramo Sh 14A-4)

Data from Flugzeug-Typenbuch. Handbuch der deutschen Luftfahrt- und Zubehör-Industrie 1944^[1]

General characteristics

• Type: seven-cylinder air-cooled radial engine
• Bore: 108 mm (4.25 in)
• Stroke: 120 mm (4.72 in)
• Displacement: 7.84 L (478.4 cu in)
• Length: 1,008 mm (39.69 in)
• Diameter: 936 mm (36.85 in)
• Dry weight: 135 kg (298 lb)

Components

• Valvetrain: 1 inlet and 1 exhaust valve per cylinder operated by pushrods and rockers
• Fuel system: 1x SUM 438a or 439a carburetor
• Fuel type: 80 octane
• Oil system: pressure feed at 2–4 atm (29–59 psi; 2.0–4.1 bar), with dry sump
• Cooling system: air

Performance

• Power output:
  

• 160 PS (158 hp; 118 kW) at 2,200 rpm (5 minutes) at sea level
• 145 PS (143 hp; 107 kW) at 2,140 rpm (30 minutes) at sea level
• 128 PS (126 hp; 94 kW) at 2,050 rpm (max. continuous / cruise) at sea level

• Specific power: 20.4 PS/L (0.33 hp/cu in; 15.00 kW/L)
• Compression ratio: 6.0:1
• Specific fuel consumption: 0.244 kg/PSh (0.545 lb/(hp⋅h); 0.332 kg/kWh) at max continuous
• Oil consumption: 0.003–0.012 kg/PSh (0.007–0.027 lb/(hp⋅h); 0.004–0.016 kg/kWh) at max continuous
• Power-to-weight ratio: 1.19 PS/kg (0.53 hp/lb; 0.88 kW/kg) at cruise
• B.M.E.P.: 5.95 atm (6.03 bar; 87.4 psi)